Die for watchcase-backs



(No Model.) 7

F. EOAUBERT. DIE FOR WATGHQASE BAGKS.

No. 498,540. Patented Ma 30, 1893.

UNITED STATES PATENT OFFICE.-

FREDERIO EOAUBERT, OF BROOKLYN, NEW YORK.

DIE FOR WATCHCASE-BACKS.

SPECIFICATION forming part of Letters Patent No. 498,540, dated May 30, 1893.

Application filed March 27, 1893- Serial No. 467,710- (No model.)

To all whom it may concern.-

Be it known that I, FREDERIO ECAUBERT, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented an Improvement in Dies for Watchcase-Backs and other Articles, of which the following is a specification.

In Letters Patent No. 472,490, granted to me April 5, 1892, as assignee of O. Wilhelm, a die is represented adapted to a watch case back and the metal is rolled into the ornamental surface of the die by the action of a conical roll. The present invention is especially adapted to use with the die shown in the said patent, although not limited thereto.

In instances where ornaments have been applied to the surface of a watch case back or similar article, the surface of the die has cor-.

responded to the exterior surface of the finished article, and a complete die has had to be back. This causes the dies to be expensive and prevents the associating together of different patterns except by the manufacture of entirely new dies.

By my present improvement I am enabled to vary the design upon the surface of the watch case back or other article by associating together different dies; that is to say, the rim or peripheral portions of the watch case back are formed by one part of the die and the central portion of the die is removable so that difierent center dies may be used with the same rim or peripheral die, thus allowing difierent dies and difierent designs to be associated together, and in order to prevent the central portion of the die rotating or changing position in relation to the rim or peripheral portion, I employ a steady device such as a pin passing partly into each of the parts so as to connect the peripheral die with the cen- 'ter die and hold them in their proper relative faces of the dies A and B may vary according to the shape of the article that is to be made,

and the surfaces of such dies A andB are to I receive. any desired ornamentation, so that when a watch case back or other article is introducedintothedies andheld in position,

as illustrated in the said patent, No. 472,490,v

and exposed to the proper pressure, either by a roller, such as represented in the aforesaid patent, or by a presser block, such as shown in my patent No. 457,150, that the metal of the watch case back is pressed against the interior of the die and receives its ornamentation which is the counterpart of that of the die.

The center or auxiliary die B may be removed from the die A and another die of the same shape and size so as to fit the opening in the die A may be substituted, the surface ornamentation, however, of the substituted die varying from the one that has been removed from the die A, so that the ornament-- gether, so as to receive into such hole a steady.

pin O which is in the base or stockD and projects therefrom so as to hold both the dies A and B from rotating or becoming displaced within the base or stock D and to prevent the auxiliary die B getting out of position in relation to the die A.

It is to be borne in mind that when the watch case back or similar article is being pressed by the action of the roller F into the embossed surfaces of the dies, there is a tendency to rotate the'dies themselves or to rotate one die in its relation to the other die in consequence of the'wave-like movement given to the metal under the action of the roll, hence it is important to prevent either the die A or the auxiliary die B from changing position the one in relation to the other, and this is accomplished by the pin or projection of any desired character that holds the two parts in their proper relative positions. This roller F is supported upon any suitable arbor and pressed to the interior surface of the Watch case back or similar article by a slide rest or other suitable supporting device.

I claim as my invention- 1. A die'for ornamenting Watch case backs and similar articles, consisting of the circular rim die A. having an opening in the middle and a removable and changeable center die B. and means for holding the parts of the die in their proper relative positions, substantially as set forth. I

2. The combination with the base or stock D and the holding pin 0, of the rim die A having a central opening, the auxiliary die B filling said opening, there being recesses for the end of the pin U by which the dies are held in their proper positions, and the clamping (lie E having a central opening and resting against the face of the die A, substantially as set forth.

3. The combination with the base or stock D, of the rim die A having a central opening, the auxiliary die B fitting said opening, and a projection for holding the two dies in their proper relative positions, substantially as set forth.

4. The combination with the base or stock D, of the rimdie A having a central opening, theauxiliary die B fitting said opening, and a projection for holding the two dies in their proper relative positions, and a roller and its support for acting against the interior surface of the Watch case, lid or similar article and pressing the same into the surface of the die, substantially as set forth.

Signed by me this 23d (lay of March, 1893.

F. EOAUBERT. Witnesses:

GEO. T. PINoKNEY, A. M. OLIVER. 

